To improve is to change; to be perfect is to change often.
Working hours are never long enough. Each day is a holiday, and ordinary holidays are grudged as enforced interruptions in an absorbing vocation.
A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.
Those who can win a war well can rarely make a good peace and those who could make a good peace would never have won the war.
It is no use saying, 'We are doing our best.' You have got to succeed in doing what is necessary.